Where: Russian Federation (63.5° N, 161.2° E: paleocoordinates 55.4° N, 16.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Magiveem Formation, Asselian (298.9 - 295.5 Ma)

• Middle Magiveem Formation, Jakutoproductus expositus-Palaeoneilo parenica zone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Primary reference: A. S. Biakov. 1998. Permian ctenodont bivalves from northeastern Russia. Paleontological Journal 32(2):129-132 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 102104: authorized by Matthew Clapham, entered by Matthew Clapham on 08.01.2011

Creative Commons license: CC BY (attribution)